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USA UNS SAE AMS-I-23011B (2006), Kovar Specialsteel Iron-Nickel Alloys for Sealing to Glasses and Ceramic and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: Kovar
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel Kovar Precipitation-Hardening UNS USA Iron-Nickel Alloys for Sealing to Glasses and Ceramic

Chemical composition(mass fraction)(wt.%) of the Kovar

C Si Mn Ni Cr Al Cu Ti Fe Mo Co W Mg Zr
≤0.04 ≤0.20 ≤0.50 ≤29.00 ≤0.20 ≤0.10 ≤0.20 ≤0.10 ≤53.00 ≤0.20 ≤17.00 ≤ ≥ ≤0.10 ≤0.10

Mechanical Properties of steel grade Kovar

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
227 (≥) 939 (≥) 24 21 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade Kovar

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
43 - -     0.22 -  
415 382 - 32.3 223   -  
819 - 13 41.2   312 323

Heat Treatment of steel grade Kovar

Heat treated : 1514°C - 1352°C

Technological Curves of steel grade Kovar

Cross Reference Table (Equivalent Grade) of Kovar

Grade Standard Country Application
KOVAR

Relevant standard of Kovar

SAE AMS-I-23011B (2006) Iron-Nickel Alloys for Sealing to Glasses and Ceramic SAE-AMS-I-23011B-(2006).pdf

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